20121581655

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{198997}}^1$

素因数の和:199125

約数の個数: 64

約数和(自身を含む): 41264225280

約数和(自身を除く): 21142643625

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 105, 107, 135, 189, 315, 321, 535, 749, 945, 963, 1605, 2247, 2889, 3745, 4815, 6741, 11235, 14445, 20223, 33705, 101115, 198997, 596991, 994985, 1392979, 1790973, 2984955, 4178937, 5372919, 6964895, 8954865, 12536811, 20894685, 21292679, 26864595, 37610433, 62684055, 63878037, 106463395, 149048753, 188052165, 191634111, 319390185, 447146259, 574902333, 745243765, 958170555, 1341438777, 2235731295, 2874511665, 4024316331, 6707193885, 20121581655]

約数ペア:

[(1, 20121581655), (3, 6707193885), (5, 4024316331), (7, 2874511665), (9, 2235731295), (15, 1341438777), (21, 958170555), (27, 745243765), (35, 574902333), (45, 447146259), (63, 319390185), (105, 191634111), (107, 188052165), (135, 149048753), (189, 106463395), (315, 63878037), (321, 62684055), (535, 37610433), (749, 26864595), (945, 21292679), (963, 20894685), (1605, 12536811), (2247, 8954865), (2889, 6964895), (3745, 5372919), (4815, 4178937), (6741, 2984955), (11235, 1790973), (14445, 1392979), (20223, 994985), (33705, 596991), (101115, 198997)]